In Normal mode, the player has to beat the zombies at Level 1.
The stage is fairly simple thanks to the plants the player gets to utilize and the time between the two waves. Whilst the Sculptor Imps can prove to be somewhat of an annoyance, the Marble Mounds that enable their special ability should easily be taken care of with Bonk Choy. If not, however, they can be stopped (or at least temporarily halted) with Wall-nut and directly dealt with by Cabbage-pult.
In Hard mode, the player has to beat the zombies at Level 4.